Wyrm's Crossing Patrol

Myriad on a one-mana body isolates the mechanic at its purest: a single point of attacking power becomes one per opponent, scaling with the width of the table rather than the strength of the card. The 1/1 doing the work is deliberately negligible, because the whole exchange is about what the copies do on the way in, not what the base creature is worth. Each token arrives tapped and attacking, then leaves at end of combat, so the payout is damage delivered without ever spending mana on haste for each body and without leaving a board that snowballs afterward. That framing makes the low cost load-bearing: the cheaper the creature, the higher the ceiling on the Myriad payout relative to its price, since you are copying a spent one-drop rather than a fully-costed threat. One important caveat lives in the rules text: because the copies enter already attacking, they skip the declare-attackers step entirely, so they do not fire "whenever this creature attacks" triggers of their own. Myriad multiplies the swing, not the attack trigger that created it, which means the mechanic rewards evasion, combat damage, and connect-on-hit effects far more than it rewards attack-triggered engines. This particular printing sits at the absolute floor of that design: minimal body, no rider, the mechanic laid bare so the pattern reads clean.